TYPICAL PERFORMANCE SPECIFICATIONS DESCRIPTION These proportional valves are direct operated pressure reducing valves. They can be used to control pressure in parts of a circuit. This valve incorporates a pressure control spool with a pressure sensing piston to sense downstream pressure. The single solenoid version, code, will allow fluid flow from P port to port when an electrical signal is applied. If the signal is decreased to zero, P port will be blocked and port opened to the tank port. The code A version will allow flow from P to A. The double solenoid version will allow flow from P to A (or P to ) when the signal is applied to the proper solenoid. A and ports are used alternately for pressure reduction in the respective port. P and T ports are common. SURFACE POSITION MAXIUMUM OPERATING PRESSURE FLUID OPERATING VISCOSITY FLUID CLEANLINESS HYSTERESIS REPEATAILITY THRESHOLD VOLTAGE CURRENT WATTAGE COIL RESISTANCE INTERNAL LEAKAGE P, A, Port T Port FLUID TEMPERATURE RANGE WEIGHT With Dither With Dither Nominal w/dither Code 12 Code 24 Code 12 Code 24 @ C (I2R) Code 12 / @ 68 F ( C) Code 24 / @ 68 F ( C) @ P @ VDC -A or -C NFPA / T3.5.1M (D3) ISO / 441 Size 3 Unrestricted (horizonal part) 35 4 ISO 446 Code 16 / 13 or cleaner 4% 1% 3% 12 VDC 24 VDC 2.2 Amp. 1.1 Amp. 19 Maximum F (65 C) For safety, over 13 F (54 C) is not recommended. 4.1 lbs. 6.3 lbs 26 8 to 35 SUS Acceptable start-up 4 SUS 1.8 kg. 2.8 kg. NOTE: temperature @ 1 F (49 C) and viscosity @ SUS, ECM4 electronics controller. 3.8.2 8 In3/min (131 ml/min) code A code code C A A T P P T P T 52
PRESSURE vs. OUTLET PRESSURE P A OR 4 3 1 5 CODE CONTROL PRESSURE RANGE 29 to 217 (2 to ) A OR T (RELIEVING) P A OR (REDUCING) 4 3 2 1 1 2 3 4 5 temperature @ 1 F (49 C), viscosity @ SUS and system pressure @, OUTLET PRESSURE P A OR OUTLET PRESSURE P A OR 5 4 3 lpm 1 5 5 1 19 1 75 5 CODE CONTROL PRESSURE RANGE 72 to 145 (5 to ) A OR T (RELIEVING) P A OR (REDUCING) 4 3 2 1 1 2 3 4 5 lpm 1 5 5 1 19 lpm 5 CODE 2 CONTROL PRESSURE RANGE 29 to 3265 ( to 2 ) A OR T (RELIEVING) P A OR (REDUCING) 4 3 2 1 1 2 3 4 5 1 5 5 1 19 temperature @ 1 F (49 C), viscosity @ SUS and system pressure @ 3, temperature @ 1 F (49 C), viscosity @ SUS and system pressure @ 33, NOTE: When the secondary pressure exceeds the reduced set pressure, flow will then move from the controlled port to the tank port. 53
PRESSURE DROP CURVES SINGLE/DOULE VALVE FLUID VISCOSITY: SUS OIL @ +1 F (49 C) d 5 3 PRESSURE DROP 4 3 1 5 P A or P SPOOL FULLY SHIFTED A or T SPOOL SHIFTED TO CONTROLLED PRESSURE ON P A or P PORT 1 2 3 4 5 6 7 8 9 5 1 3 lpm CONTROL PRESSURE vs. INPUT SIGNAL CURVE SHOWN @ ZERO FLUID VISCOSITY: SUS OIL @ +1 F (49 C) 8 CONTROL PRESSURE IN % 6 4 1 3 4 5 6 7 8 9 54 INPUT SIGNAL IN %
OPTIONS: CODES, T or 5H DIMENSIONS SHOWN IN: (MILLIMETERS) INCHES NFPA D3 size (formerly D1). See Mounting Surface section for interface pattern. 1/2-14 NPTF (81.) 3.19 SOL. "b" SOL. "a" 5-PIN OPTION (CODE 5H) DIN (CODE) LACK PLUG 1 FT/lbs. TORQUE FOR NUT MANUAL GREY PLUG OVERRIDE PIN (4) (16.5).65 (74.7) 2.94 (85.3) 3.36 (167.1) 6.57 "b" "A" PORT END (CODE ) (266.) 1.47 (68.1) 2.68 (CODE C) (167.1) 6.57 "a" "" PORT END (3.2).1 LOCATING PIN (CODE A) NOTES: 1. Electrical box may be rotated 18 (Codes, T and 5H). 2. 5-pin quick disconnect meets NFPA recommended standard T3.5.29M-198. 3. Two lead wires for each solenoid --- 6 inches (2.44 mm) long (except Code D) and ground screw are provided by removing the top cover plate. 4. Mounting bolts (4): torque 4-5 ft./lbs. using a 5/32 hex wrench. (5.) 1.77 (46.) 1.81 55
ORDERING INFORMATION SELECT ONE: SELECT ONE: SELECT ONE: SELECT ONE: EP O3 M 3 G L A INTERFACE CODE DESCRIPTION CODE 3 3 NFPA D3 ISO 441 3 TYPE DESCRIPTION 3-WAY DESIGN. DIRECT OPERATION PROP. PRESSURE REDUCING VALVE FUNCTION CODE DESCRIPTION P, A & T PORTS A PRESSURE ON "A" PORT) SINGLE P, & T PORTS PRESSURE ON "" PORT) SINGLE P A OR & T PORTS C PRESSURE ON "A" OR "" PORT) DOULE PRESSURE RANGE CODE PRESSURE RANGE MAXIMUM 2 29-217 72-145 29-3265 4. 4. 3.1 (2 - (5 - ) ( - 2 ) ( lpm) ( lpm) (12 lpm) SEALS VITON SEALS STANDARD OPTIONS S CODE DESCRIPTION CODE VOLTAGE DIN 4365 / 12 12 VDC D ISO 44 (FORM A) 24 24 VDC S W/O TERMINAL POSTS T W/ TERMINAL POSTS & CONDUIT GROUND 5H W/5-PIN MALE RECEPTACLE FOR SINGLE OR DOULE VALVE MANUFACTURER CODE MANUFACTURER L LISK TYPICAL ORDERING CODE: --GD-24L 56